ASTROSAT CZTI

Data Quality Report

Orbit 28650

Creation date: 2024-06-27T19:54:28.877104
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_073T08_9000004112_28650cztM0_level2.evt modeM0/AS1A10_073T08_9000004112_28650cztM0_level2_quad_clean.evt
Size (bytes)674,884,800113,688,000
Size643.6 MB 108.4 MB
Events in quadrant A4,950,351734,920
Events in quadrant B3,962,668755,127
Events in quadrant C4,017,619724,793
Events in quadrant D6,982,311687,290

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196551
B0166951
C0168221
D0261233

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77745396.933368%
B77752753.536977%
C77754095.260450%
D77744986.405969%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7814 7776 308 308 3.94% 3.96%
B 7815 7777 8 8 0.10% 0.10%
C 7815 7777 0 0 0.00% 0.00%
D 7814 7776 364 364 4.66% 4.68%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 1104996 5531.14 984 964 199.6
A 12 16 35316 172.1 984 964 199.6
A 13 254 14071 65.67 984 964 199.6
B 3 209 23539 117.97 979 953 191.5
B 12 111 23521 117.87 979 953 191.5
B 5 172 22803 114.12 979 953 191.5
C 14 238 217715 973.09 942 951 222.8
C 14 254 101381 450.85 942 951 222.8
C 7 247 18139 77.16 942 951 222.8
D 1 52 1864850 8067.53 954 931 231.0
D 8 195 1172920 5072.68 954 931 231.0
D 12 233 193768 834.65 954 931 231.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter